Date: Mon, 9 Jan 2006 14:30:08 -0800
Reply-To: David L Cassell <davidlcassell@MSN.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: David L Cassell <davidlcassell@MSN.COM>
Subject: Re: New to Correlation
In-Reply-To: <200601090237.k08NTKnC028824@mailgw.cc.uga.edu>
Content-Type: text/plain; format=flowed
emoorthy@BLUESINGAPORE.COM wrote back:
> >****Thanks for provideing some context. But you pose two questions,
>which are not
> >identical: 1) You say you need to find the CORRELATION between the
>variables
> >2) You say you need to determine whether people in the same age group
> >repsond similarly.
>
>--- May be, I have put it on the wrong way! The main Idea is to find
>whether,similar aged people tend to response in a similar way to the
>survey!!
So you don't want 'correlation' but some sort of association.
> >****Another question is whether the letters in response (A through F) are
> >ordinal or nominal.
>
>--- They are Nominal. It indicates the answers which the user selects
>during
>the survey.one problem is, a question can have multiple choices tooo.
I recommend that you get a statistician help you analyze these data using
CMH statistics, which you can get out of PROC FREQ.
> >****Yet another question is whether this is all of your data, or just a
> >portion of it, to show what you've got
>
>--- This is just a portion of the data. I've pulled the possible values,
>except the multiple answer records(since it may confuse more)
The 'multiple answer' part here may invalidate some statistical methods. So
you need to explain that part *very* carefully.
> >**** Yet anohter question is what the meaning of the variable 'question
> >field ID' is, and whay each person has multiple rows.
>
>--- Yes, Question field ID is the Question Number. The reason for multiple
>rows is,like shown below ,the data indicates that a person with Survey Id
>7,
>under the age group 23-29, has answered option D for Question1, answered C
>for question 2, and so on.
So you want to do this analysis for each Question Number separately.
Fortunately, SAS has BY statements to help you with that.
HTH,
David
--
David L. Cassell
mathematical statistician
Design Pathways
3115 NW Norwood Pl.
Corvallis OR 97330
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